Dye Solar Cells on ITO-PET Substrate with TiO2 Recombination Blocking Layers

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Research units


Atomic-layer-deposited TiO2 recombination blocking layers were prepared on indium tin oxide-poly(ethylene terephthalate) (ITO-PET) photoelectrode substrates for dye solar cells and were examined using several electrochemical methods. The blocking layers increased the open-circuit voltage at low light intensities. At high light intensities, a decrease in the fill factor (FF) due to the additional resistance of the current transport through the layer was more significant than the positive effect by the reduced recombination. The decrease in the FF was reduced by a thermal treatment that made the blocking layer more conductive due to a structural change from an amorphous to a crystalline form. Therefore, thinner blocking layers of this type are required for plastic cells prepared at low temperature than for conventional glass dye solar cells made with temperature processing.


Original languageEnglish
Pages (from-to)B876-B883
Number of pages8
JournalJournal of the Electrochemical Society
Issue number8
Publication statusPublished - 2009
MoE publication typeA1 Journal article-refereed

    Research areas

  • atomic layer deposition, dyes, electrochemical impedance spectroscopy, heat treatment, solar cells, titanium compounds, MANUFACTURING NANOSTRUCTURED ELECTRODES, CONDUCTING GLASS/TIO2 INTERFACES, BACK-REACTION, PHOTOVOLTAIC PERFORMANCE, IMPEDANCE SPECTROSCOPY, DEPOSITION, EFFICIENCY, FILM

ID: 3213594